baber/WOPTO huggingface dataset:
Patent KR-20010057890-A (KR)
Inventor: KIM SANG YEOL
IPC: G11B20/10
Filed: 1999-12-23
Abstract: PURPOSE: A car audio player is provided to reduce trouble to download digital audio data by containing a memory device in a detachable front set of the car audio player. CONSTITUTION: A connector for download(41) is installed at a front set formed in sticking and taking off type for burglar proof and downloads digital audio data combined mutually and compressed with an external apparatus. A front memory(42) stores digital audio data compressed and downloaded through the connector for download(41). A front micom(45) executes general control function about the compressed digital audio data to be stored in the front memory(42). A front connector(46) transmits the compressed digital audio data to be stored in the front memory(42) to a main set(50) which is fixed at vehicle. A main connector(51) is connected mutually to the front connector(46) to download the compressed digital audio data to be transmitted from the front memory(42). A main memory(52) stores the compressed digital audio data to be transmitted through the main connector(51). A main micom(55) executes general control function about the compressed digital audio data to be stored in the main memory(52). A data processing part processes the compressed digital audio data according to control command of the main micom(55) to signal to be regenerated in system.
Patent KR-20010064087-A (KR)
Inventor: AHN MUN WON
IPC: H03D3/00
Filed: 1999-12-24
Abstract: PURPOSE: A quadrature amplitude modulation demodulator for low-nose high-speed symbol timing recovery is provided which performs symbol timing recovery for a signal including an error causing factor output from an interpolation and SRRC filter in response to a signal output from a lock detector during the initial operation and carries out the symbol timing recovery for a signal from which an error causing factor output from a carrier recovery unit is removed after locking has been made. CONSTITUTION: A low-noise high-speed QAM demodulator includes an analog-digital converter(100) for sampling a modulated analog signal into digital data with a predetermined frequency, and an interpolation and filtering circuit(110) for interpolating the sampled digital data in response to a sampling timing and filtering the data into a desired specific shape. The demodulator further has an equalizer(130) for receiving the data output from the interpolation and filtering circuit to remove an error causing factor generated due to interference between data, and a carrier recovering circuit(140) for receiving the data output from the equalizer to remove an error causing factor caused by a phase offset and frequency offset and outputting the data as a recovered final symbol. The demodulator also has a lock detector for performing a locking operation in response to the signal output from the carrier recovering circuit, and a symbol timing recovering circuit(120) for selectively receiving the data output from the interpolation and filtering circuit and the final symbol data output from the carrier recovering circuit to carry out symbol timing recovery.
Patent KR-20010029440-A (KR)
Inventor: KIM SEH YONG
IPC: G06F17/00
Filed: 1999-12-28
Abstract: PURPOSE: An agency method and device of information using a question and answer service are provided to rapidly collect information by enabling an information purchaser to select an appropriate answer, and by transmitting declared amounts to an information seller who gives the answer after the information purchaser registers a question and a fair price on a billboard, and the information seller gives an answer. CONSTITUTION: An information purchaser(100) registers a question on a question and answer billboard of an information transaction center(110). The information purchaser(100) deposits the price for the question using a payment measure. Information sellers(120a¯120n) read the question, and give an appropriate answer. The information purchaser(100) reads the answer which the information sellers(120a¯120n) give, and selects an appropriate answer. The information transaction center(110) pays the information seller for the price for the answer.
Patent KR-20010060907-A (KR)
Inventor: HUH GI HAENG
IPC: C21C7/064
Filed: 1999-12-28
Abstract: PURPOSE: A method for accelerating the removal of phosphorous of converter slag by introducing coal as a reducing agent into a slag layer in a powder state and SiO2 is provided, which has an effect on improving quality of molten pig iron by reducing the amount of phosphorous of molten pig iron and the cost of production without using expensive Al. CONSTITUTION: In a reducing treatment method for removing phosphorous of converter slag, coal is introduced into a slag layer in a powder state as a reducing agent by using Ar gas as a conveying source and SiO2 is introduced to be a basicity CaO/SiO2 of slag of 0.9 to 2.0.
Patent KR-20010061101-A (KR)
Inventor: KIM JAE HUN
IPC: A23L17/40
Filed: 1999-12-28
Abstract: PURPOSE: A method for manufacturing a Corbicula fluminea liquid is provided to obtain the liquid with a peculiar taste of Corbicula fluminea in high yield, and to use the liquid as a raw material for a variety of Corbicula fluminea processed food stuffs. CONSTITUTION: Crushed Corbicula fluminea is input in a stirrer at 60rpm and treated with heat of 90-100deg.C for 5-15 minutes for inactivating unnecessary enzymes and for sterilizing microbes. Protease is added into the heated product to decompose protein substances and to extract tasteful substances. A heat treatment is applied for inactivating the input enzymes for 5-15 minutes after finishing enzyme decomposition. The heated decomposed compounds are cooled at room temperature, and then a liquid is collected by centrifuging the compounds at 6,000-8,000rpm for 5-15 minutes. One of additives among from leek extract 0.037-0.36wt.%, Arabic gum 5 times of the leek extract amount, liquid dextrin 30.0wt.%, refined salt 8wt.%, sodium succinate 0.3wt.% is added to the liquid having 7.0Brix, and homogenized at 15,000rpm for 5 minutes. The total amount of the additives is between 38wt.% and 42wt.% of the liquid. The homogenized solution is powdered by using a disk-type spray dryer. The condition of the drying is atomizer speed 12,000rpm, ventilating temperature 170deg.C and fair wind temperature 100deg.C.
Patent KR-20010061193-A (KR)
Inventor: KANG JAE HUN
IPC: F16H61/14
Filed: 1999-12-28
Abstract: PURPOSE: A damper clutch controlling method of an automatic transmission for a vehicle makes correct engine braking force by controlling operating oil to implement deceleration direct connect control. CONSTITUTION: Whether the opening angle of a throttle valve is larger than 0% or not is decided by reading throttle valve opening angle and vehicle speed which are detected during driving. If the throttle valve opening angle is 0% and acceleration resistance is larger than rolling resistance, vehicle requiring brake force is calculated. Then, damper clutch controlling duty is decided and engine control requiring signal is outputted. Finally, decided damper clutch controlling duty is outputted. Thus, fuel economy is improved.
Patent KR-20010061336-A (KR)
Inventor: LEE HYEON GUK
IPC: G06F1/28
Filed: 1999-12-28
Abstract: PURPOSE: A battery calibration time notifying or automatic battery calibrating portable computer and a method for the same are provided to enable a user to easily use a battery calibration function at a proper time so that it can enhance efficiency of the battery. CONSTITUTION: The portable computer comprises a microcomputer(130), a BIOS ROM(106) and a display(112). The microcomputer(130) reads battery charge data, for example voltage, current, residual current, maximum charge capacity and others, from the battery, and determines conditions of executing a battery calibration function based on the read data. For example, it checks the residual current and the maximum charge capacity, or compares the initial maximum battery charge capacity with a specific reference value. If a condition is satisfied to execute the battery calibration function, an SMI(System Management Interrupt) is transmitted to the BIOS ROM(106). The BIOS ROM controls informing the user of executing the battery calibration or directly executing the battery calibration in response to the SMI. The display(112) displays the information of executing the battery calibration.
Patent KR-20010059508-A (KR)
Inventor: KIM MYEONG SU
IPC: C25D3/00
Filed: 1999-12-30
Abstract: PURPOSE: A method is provided which prevents excessive plating on the edge part of a steel sheet although a width of the steel sheet is changed in a radial type continuous plating line using a soluble anode. CONSTITUTION: In a plating method using a radial type continuous plating line using a soluble anode (5), the method for preventing excessive plating on the edge of a steel sheet in a radial type electrolytic cell is characterized in that the soluble anode is arranged so that it has an inclination angle (θ) of 5 to 30 degrees from the vertical direction, and the radial type continuous plating line is constructed so that the end of the most outward anode is positioned from the maximum width of a steel sheet to be plated to the outside of a distance of 10 to 30 mm from the edge of the steel sheet, thereby preventing excessive plating on the edge part of the steel sheet during continuous plating.
Patent KR-20000068236-A (KR)
IPC: C08J3/20
Filed: 1997-08-13
Abstract: The invention is a method of making a controlled release device that is free of defects. According to one aspect of the present invention, a method has the steps of first combining an active chemical with a dried carrier into a bound friable mixture followed by combining the bound friable mixture with a polymer preform prior to forming a device. According to another aspect of the present invention, a method has the steps of heating and mixing a casting urethane with an active chemical into a first solution, heating and mixing a trialkanolamine with a soft segment cross-linker into a second solution, and mixing the two solutions. A further aspect of the present invention is a composition of a casting urethane.
Patent KR-20000035982-A (KR)
Inventor: MIKULEC MICHAEL A
IPC: A44B11/25
Filed: 1997-09-11
Abstract: PURPOSE: A buckle for seat belts and more particularly to that type of buckle usable with a buckle pretension or belt tightener, is provided. CONSTITUTION: A seat belt buckle(100) operable with a pretension connected thereto for moving the buckle a determinable distance to remove slack of the seat belt about an occupant, the buckle comprises: a frame(102), adapted to be connected to the pretension, defining a tongue receiving opening to receive a tongue(173) as the tongue is moved in a first direction, the frame having a first opening therein, and opposing frame sides(108a,b), each side including a latch plate slot(110) arranged generally perpendicular to the first direction and an arcuate slot(112), the arcuate slot(112) including a first portion generally parallel to the latch plate slots(110) and a second portion angled thereto, a latch plate(180), having end portions movable within the latch plate slots between a locked position in engagement with an opening within the tongue and with the first opening, a weight assembly pivotally connected to the end portions of the latch plate to generate a force upon the latch plate during operation of the pretension tending to urge the latch plate into the first opening.
Patent KR-20000068807-A (KR)
Title: 휴대용 레이저 거리계 및 디지털 컴퍼스 조립체
IPC: G01C3/08
Filed: 1998-08-18
Abstract: 본 발명은 표적의 거리, 방위 및 앙각을 정확히 측정하여 명중 가능성을 높이기 위한, 개인용 무기 또는 조준 장치 상에 장착될 수 있는, 휴대 가능하고, 경량이면서, 소형이고, 눈에 안전하며, 배터리 작동되는 레이저 거리계 및 디지털 컴퍼스 조립체(10)에 관한 것이다.  레이저 거리계 및 디지털 컴퍼스 조립체(10)는 1.0 내지 1.1 미크론 범위 내의 파장을 갖는 출력 레이저 비임을 전송하기 위한 레이저 송신기(8)와, 거리를 얻기 위해 표적까지의 왕복 시간이 측정되는 1.5 내지 2.2 미크론 범위 내의 파장으로 출력 레이저 비임을 변환하기 위한 OPO 변환기(36)와, 변환된 출력 레이저 비임을 신장시키기 위한 신장기와, 외부 표적으로부터 반사된 복귀 레이저 비임을 수신하고 출력 펌프 비임과 복귀 펌프 비임 사이의 시간 간격에 관련한 신호를 발생하는 검출기(28)와, 디지털 컴퍼스(4)와, 마이크로 프로세서(6), 신장기를 외부 표적에 조준하는 장치를 갖는다.  상기 장치는 장치를 개인용 무기 또는 조준 장치 상에 장착하기에 적합한 하우징(13) 내에 위치된다.  레이저 송신기(18)는 플래시램프 펌프에 의해 펌프되고 배터리 작동되는 펌프 레이저이다.
Patent KR-20000069179-A (KR)
Title: 회전 노상로 및 그 조업방법
IPC: C21B13/10
Filed: 1998-03-27
Abstract: 일방향으로 이동하는 노상을 구비한 이동 노상로에 철광석과 고체 환원재로 이루어진 원료를 공급, 적재하여 이것을 순차적으로 예열, 환원, 배출하는 일련의 조작을 반복함으로써 상기 광석의 환원을 행하는 데에 있어서, 환원 처리를 마친 환원 광석이 갖는 열을 이용하여 이동 노상로 내에 공급되는 원료를 예열하고, 이 예열에 이어서 원료 광석을 이동 노상 위에 적재하도록 한다.
Patent KR-20000069234-A (KR)
Title: 산화 조성물 및 케라틴 섬유의 염색, 영구적 재성형 및 표백을위한 용도
IPC: A61K8/60
Filed: 1998-09-22
Abstract: 본 발명은 케라틴 물질에 적당한 지지체 내에 하기를 포함하는, 케라틴 섬유 처리용 미용 조성물, 및 상기 조성물을 사용한 케라틴 섬유의 처리 방법, 특히 모발의 염색, 영구적인 재성형 또는 표백 방법에 관한 것이다: 
     (a) 2-전자 산화환원 형태의 효소의 하나 이상의 공여체의 존재 하에, 상기 효소 하나 이상; 
     (b) 비이온성 지방 수크로나미드 하나 이상.
Patent KR-20000069465-A (KR)
Title: 웨이퍼 반송 장치
IPC: H01L21/677
Filed: 1998-10-13
Abstract: 복수의 웨이퍼의 주연부를 고정시키기 위해 양측상에 홈이 형성된 웨이퍼 카세트로부터 반송 아암을 종 방향 및 전후 방향에 대해 상대적으로 이동시킴에 의해 웨이퍼를 취출하는 웨이퍼 반송 장치이다.  반송 장치는 반송 아암이 삽입되는 웨이퍼 카세트의 웨이퍼 출입측의 배면에 웨이퍼를 압출하는 웨이퍼 압출 기구를 포함하고, 이 웨이퍼 압출 기구는 웨이퍼와의 접촉시에 회전 가능한 가압 핀과, 이 가압 핀을 웨이퍼 카세트의 배면으로부터 웨이퍼를 웨이퍼 출입측으로 압출하도록 구동하는 구동 기구를 포함한다.
Patent KR-20000069508-A (KR)
Title: 편향요크용 코어 및 편향요크
IPC: H01J29/76
Filed: 1998-11-11
Abstract: 본 발명은 표시패널과 판넬부와 네크부로 구성되는 음극선관을 위한 편향요크용 코어 및 편향요크이다.  이 편향요크코어는 네크부측의 개구단면이 원형형상을 이루고, 판넬부측의 개구단면의 내주가 표시패널의 형상과 대응하는 실질적으로 장방형의 형상을 이루며, 이 실질적으로 장방형의 각 변이 실질적으로 직선부를 포함한다.  이와같은 코어를 구비한 편향요크는 편향감도의 향상 및 소비전력의 저감을 실현할 수 있다.  또 코어의 내면에 여러개의 볼록형상부를 마련한 경우에는 이들 볼록형상부 사이의 홈부 저면의 포락형상이 실질적으로 장방형이 된다.
Patent KR-20000070710-A (KR)
Filed: 1998-01-21
Abstract: 본 발명은 직접 또는 가교 그룹을 통해 형광 호스트 발색단 및 형광 게스트 발색단이 공유 결합된 고형 유기 지지재를 포함하고, 호스트 발색단의 형광 방출 스펙트럼이 게스트 발색단의 흡수 스펙트럼과 중복되고, 호스트 발색단이 벤조[4,5]이미다조[2,11-a]이소인돌-11-온으로 이루어진 그룹으로부터 선택되는 조성물에 관한 것이다.
Patent KR-20000075732-A (KR)
Title: 임파구의 활성화 억제제
IPC: C07K16/28
Filed: 1998-02-27
Abstract: 신규한 임파구활성화 억제제의 제공 
     서열번호 1로 나타낸 아미노산 서열을 갖는 단백질에 특이적으로 결합하는 항체를 유효성분으로서 함유하는 임파구활성화 억제제. 
     상기 항체로서는, 항HM1.24항체가 바람직하며, 본원 발명의 임파구활성화억제제는 자기면역질환, 장기이식시의 거절반응, 또는 알레르기의 예방·치료제로서 사용된다.
Patent KR-20000075994-A (KR)
Title: 수직형 상호 접속 전자 어셈블리와 이것에 유용한 조성물
IPC: H05K3/34
Filed: 1998-01-27
Abstract: 본 발명에 따르면, 다층 인쇄 회로 기판이 제공되는데, 그 구조는 복수의 층(a)-(c), 즉 (a) 하부 회로층, (b) 비어 상호 접속층, (c) 상부 회로층을 포함하여, 원하는 다층 구조를 이룬다.  본 발명의 다른 양태는 콤포넌트 또는 다이가 부착된 다층 인쇄 회로 기판에 관한 것으로, 그 구조는 (a) 단층 또는 다층 인쇄 회로 기판; (b) 적절한 유전체내에 패턴화되어 있는 도전성 접착 조성물을 갖는 비어 상호 접속층, 여기서 적절한 유전체는 인홰 회로 기판과 콤포넌트 또는 다이간의 접착력을 제공하고, 도전성 접착 조성물은 인쇄 회로 기판의 접속 패드와 부착된 콤포넌트 또는 다이간의 전기적 상호 접속 및 접착력을 제공한다; (c) 상기 적절한 패턴화된 유전체를 이용하여 인홰 회로 기판에 부착되는 면적 어레이 콤포넌트 패키지 또는 베어 다이를 포함한다.
Patent KR-20010068347-A (KR)
Title: Two way voice communication system using telephone and PC through the internet.
Inventor: PARK BONG RAE
IPC: H04L12/66
Filed: 2000-01-04
Abstract: PURPOSE: A device for interactive Internet voice communication by using a telephone, a PC and an Internet network is provided to use the telephone without the burden of the extra telephone use charge by using an Internet line at home and work, which have a leased line. CONSTITUTION: The device for interactive Internet voice communication by using the telephone, the PC and the Internet network includes nine terminals(1-9). A telephone line(1) is connected to the first terminal and the second terminal is connected to a modem of a computer. The third terminal is connected to a speaker output terminal(3) of the computer and the fourth terminal is connected to a mike terminal(4) of the computer. The fifth terminal is connected to an outer speaker(5) and the sixth terminal is connected to an outer mike(6). The seventh terminal is connected to a PSTN telephone line terminal(7) of the telephone and the eighth terminal is connected to a handset terminal(8). And ninth terminal is connected to a handset(9).
Patent KR-20010068578-A (KR)
Title: A co-extrusion polyester film for metal plate bonding, and a process of preparing for the same
Inventor: KIM YEONG SEOK
IPC: C08J5/18
Filed: 2000-01-07
Abstract: PURPOSE: A coextruded polyester film for adhering metal plates is provided, which has excellent adhesibility to the metal plate and draw molding property and improves heat-proof property and shock-resistance of a metal can. And a method for preparing thereof is also provided. CONSTITUTION: The method comprises steps of: (i) surface-fractionating a copolymer polyester chip(A) containing 12-30 mol of isophthalic acid based on the total acid components and 3-10 mol of neopentyl glycol based on the total glycol components with a surface-fractionating device under a condition of the following formula (I): 1/70*PH/lr¬2 ; and (ii) after two-layer coextruding a copolymer polyester chip(B), which has an ethylene terephthalate as a main repeating unit, as a first layer and the surface-frictionated copolymer polyester chip as a second layer, biaxially orienting it. In the formula (I), P is a distance(millimeter) between screw pitches, H is a height(millimeter) of a screw peak, l is an average length(millimeter) of a chip, r is an average diameter(millimeter) of a chip and Q is a rotating speed(revolution per minute) of a surface-fractionating machine. The coextruded polyester film for adhering metal plates comprises a first layer of copolymer polyester having an ethylene terephthalate as a main repeating unit and a second layer of copolymer polyester containing 12-30 mol of isophthalic acid based on the total acid components and 3-10 mol of neopentyl glycol based on the total glycol components.
Patent KR-20000053561-A (KR)
Inventor: INOU EGEN
IPC: H01L23/522
Filed: 2000-01-21
Abstract: PURPOSE: A method for manufacturing a semiconductor device is provided to form a fine contact of a good electrical characteristic, by increasing a margin of a contact process, and preventing an electrical short between a gate electrode and a diffusion layer. CONSTITUTION: A method for manufacturing a semiconductor device having a lower-layer wiring selectively formed on a semiconductor substrate and an upper-layer wiring formed on an interlayer on the lower-layer wiring, in which a contact formed among the adjacent upper-layer wiring is connected to the lower-layer wiring, comprises the steps of: forming the lower-layer wiring on the semiconductor substrate; forming a first interlayer on the lower-layer wiring; forming the upper-layer wiring on the first interlayer; forming a first insulation layer on the upper-layer wiring; forming a second interlayer on the first insulation layer; opening a contact hole reaching the fist insulation layer in the second interlayer, the contact hole being positioned on the lower-layer wiring below the adjacent upper-layer wiring; depositing a second insulation layer on the semiconductor substrate; and sequentially etching back the second insulation layer, the first insulation layer and the first interlayer by an anisotropic etching to open a contact hole reaching the lower-layer wiring.
Patent KR-20010014472-A (KR)
Inventor: PRASAD VIDYANATHA A
IPC: C07D285/125
Filed: 2000-02-03
Abstract: PURPOSE: Novel method for converting 2-(methylthio)-5-(trifluoromethyl)-1,3,4-thiadiazole (TDA) into 2-(methyl-sulfonyl)-5-(trifluoromethyl)-1,3,4-thiadiazole using catalytic oxidation in the presence of hydrogen peroxide. The catalyst system where the molar ratio of glacial acetic acid to 2-(methylthio)-5-(trifluoromethyl)-1,3,4-thiadiazole is from about 0.1:1 to about 0.5:1 is used for the oxidation reaction. CONSTITUTION: The method is used for producing 2-(methylsulfonyl)-5-(trifluoromethyl)-1,3,4-thiadiazole in the presence of an appropriate oxidizing agent by catalytic oxidation, wherein the oxidizing agent is preferable hydrogen peroxide; the catalytic system to be used for the oxidation reaction is a mixture of boric acid and glacial acetic acid; and the molar ratio of the glacial acetic acid to 2-(methylthio)-5-(trifluoromethyl)-1,3,4-thiadiazole as the starting material is about 0.1:1 to about 0.5:1.
Patent KR-20010077542-A (KR)
Title: Method and system for providing contact information by using character message service of radio-telephone
Inventor: KIM JONG CHUL
IPC: H04W4/12
Filed: 2000-02-03
Abstract: PURPOSE: An apparatus for guiding contact information by using the short message service of a mobile telephone and a method thereof are provided to input and store automatically the information of a contact place in the mobile telephone by using a letter transmission message of the mobile telephone so as to guide the information of the contact place. CONSTITUTION: A search word is required from a user(100). The contact information desired by the user is searched by using the search word(102). A short message including the searched contact information is generated to transfer the user's terminal(112). The short message is transferred to a message transferring apparatus so as to transfer the user's terminal(114).
Patent KR-20010083327-A (KR)
Title: A cassette indexer system for semiconductor device fabrication equipment
Inventor: JUN JIN HO
IPC: H01L21/68
Filed: 2000-02-10
Abstract: PURPOSE: A cassette index system of equipment for manufacturing a semiconductor is provided to improve quality and yield, by preventing a wafer cassette from being contaminated even if the wafer cassette stands by in a load station for a long time. CONSTITUTION: A wafer cassette(10) is loaded in at least one load station(110). A cover(132) covers the wafer cassette standing by in the load station. A cassette index system includes the load station and the cover, and prevents the wafer cassette standing by in the load station from being contaminated by particles.
Patent KR-20000058008-A (KR)
Inventor: SIOBARA DOSIO
IPC: C08G59/42
Filed: 2000-02-11
Abstract: PURPOSE: An encapsulating material for a flip-chip-type semiconductor device is provided to easily distinguish a defective product and to improve a reliability, by checking a state of filling of an under-fill material. CONSTITUTION: An encapsulating material for a flip-chip-type semiconductor device comprises: liquid epoxy resin of 100 parts by weight; a hardening material of 0-100 parts by weight; a globular silica 50-300 parts by weight regarding 100 parts by weight of the total sum of the liquid epoxy resin and the hardening material; a globular inorganic filler not penetrated by soft X rays, which is of an effective volume blocking a penetration of soft X rays; and a hardening accelerant of 0.01-10 parts by weight regarding 100 parts by weight of the total sum of the liquid epoxy resin and the hardening material.
Patent KR-20010081842-A (KR)
Title: Alram system for stepper having multi-track
Inventor: CHOI MIN RAK
IPC: H01L21/027
Filed: 2000-02-19
Abstract: PURPOSE: An alarm system for a stepper with a multi-track is provided to perform rapidly a process by generating an alarm sound when one of two or more tracks is finished. CONSTITUTION: A cassette(10) of the first track and a cassette(14) of the second track output a signal of logic 1 in case of loading carrier and a signal of logic 0 in case of unloading carrier, respectively. A ready switch(12) of the first track and a ready switch(16) of the second track output he signal of logic 0/1 corresponding to on/off. A detection circuit(20) outputs the signal of logic 1 to an alarm generation circuit(30) when one of the first and the second tracks is finished. The detection circuit(20) is composed of the first and the second AND gates(26,28), the first and the second inverters(22,24), and an OR gate(29). The alarm generation circuit(30) is composed of a light emitting diode(36) and a buzzer(34). A relay(32) is connected between the OR gate(39) and a grounding. The relay(32) is connected with a switch for operating the buzzer(34).